Trolley.



S. B. SICKELSMITH.

TROLLEY. APPLIGATION FILED APR. 7. 1908.

Patented Feb. 16, 1909.

- portion or" a trolley pole and head.

NETE@ STAES PATENT QFFCE.

SAMUEL B. SICKELSMITH, OF NEWHAVEN, PENNSYLVANIA.

nogeiaeav.

y.; Y, Appiioationgled April 7, i968.'Y Serial No. 425,721. y gli To alZ'ww/m it may concern:

Be it known that l, SAMUEL B. Stoner.- sirrrrr, a citizen oi the United States, residing at Newhaven, in the county of Fayette and State of Pennsylvania, have invented a new and useful rlrolley, or" which the following is a specication.

This invention relates to trolley poles, and the priinary object is to provide a novel structure in which the wheel is niore cornpletely relieved of the rock and play of the car, and can inore quickly adapt itself to the changes or inequalities of the wire against which it travels, than is the case with trolley wheels journaled directly on the ends of long poles as is now custoinary, thereby reducing materially the liability of the wheel becoming highly heated and its jurnping or disengaging the wire.

A further object is to so arrange the structure that in case the wheel is oli the wire, the pole will readily pass span wires or other overhead obstructions ot a siniilar character.

rlhe preferred form of construction is illustrated in the accompanying drawings, wherein Figure l is a side elevation of the upper Figs. 2 and 3 are respectively cross sectional views on the line 2-2 and 3 3 of Fig. l.

Similar reference numerals designate corresponding parts in all the figures ot the drawings.

In the embodiment disclosed, the upper portion of a trolley pole is shown, and is designated by the reference numeral 4, this pole being niounted on a car in any well known or suitable inanner. rllhe upper end of the said pole is downwardly or rearwardly turned, as shown at 5, and screwed or otherwise fastened to said end, is a yoke 6. An arni 7, disposed longitudinally of the pole Il, has an intermediate portion located in the yoke, and is pivoted thereto by a transverse pin 8. lt will be noted by reference to Fig. 2 that the diameter of the arin is less than the space between the sides of the yoke so that the said arm is capable of a lateral sliding niovenient on the pivot pin S. On the outer end of the arin 7 is journaled a trolley wheel 9 of any suitable structure, and the inner end of said arm is provided with an opening or slot 10. A guide stein 1l, fixed to the pole 4 and extending rearwardly therefrom, passes through the slot or opening l0, and has on its free end, a nut i' Specification ol Letters Patent.

Patented Feb. 16,1909.

or other stop l2 against which the inner end of the arni norinally abuts. A. compression spring 13 is interposed between the inner end of the arin 7 and the pole, being inounted on the steni ll and held centered with respect thereto by suitable washers le. With this structure therefore, it will be evident that the trolley wheel 9 being niounted on the swinging arrn 7, is capable of play with respect to the pole 4i, and the arni 7 being comparatively short, there is not the saine ainount of inertia to overcome as it' the wheel were inounted directly on the end of a long pole. Further than this, the structure is so arranged that if the wheel should becoine disengaged from the wire against which it travels, cross wires which may be in the way, will ride freely up the pole 4i and arrn 7, the wheel 9 passing beneath the same, there being no projecting portions against which such cross wires can hang or catch. 'With this construction moreover, it will be noted that while the pin 8 constitutes a pivot on which the arm 7 swings and the stein l1 constitutes a. guide during such swinging movement, said stein also constitutes a pivot on which the arin 7 can swing laterally of the pole 4 in which case, the pin 8 constitutes a guide. This slight lateral Inovenient is ot' advantage, particularly on lines having short or sharp curves.

Freni the foregoing, it is thought that the construction, operation and many advanr tages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and niinor details of construotion, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what l claini as new, and desire to secure by Letters Patent, is

l. ln a structure otl the character set forth, the combination with a trolley pole having a downwardly offset upper end, of an arin disposed longitudinallyand in rear of said pole, a pivotal connection between the downwardly or'ifset upper end of the pole and an intermediate portion of the arni, a trolley wheel ournaled on the upper end of the arm and located above said oli'set end, a guide stern carried by the pole below the offset end and being slidably engaged by the lower end of the arm, and a compression spring located on the stem and interposed between the pole and arm.

2. ln a structure of the character set forth, the combination with a trolley pole having a downwardly turned upper end provided with a yoke, of ancarm disposed longitudinally'and in rear of said pole, said arm hav-- ing a pivotal connection Vbetween its ends in said yoke, a trolley wheel journaled on the .Outer end of the arm, the inner end of said arm having an opening, a downwardly extending guide stem fixed to the pole and passing through the opening, a stop carried by the rear end of the guide stem, and a compression spring located on the stem and interposed between the arm and pole.

3. In a structure of the character set forth, the combination with a pole, of an arm having a swinging movement in line with the pole and having a swinging movement laterally thereof, a plurality of pivotal connections between the pole and arm that permits such movement, one of said pivotal connections constituting a guide on which the arm slides when the arm swings on the other connection as an axis, and a trolley wheel journaled on the arm.

4. In a structure of the character set forth, the combination with a pole, of an arm having a pivotal connection between its ends with the pole, said arm having a lateral slidingmovement on the pivot, a guide stem for the inner end of the arm on which said arm swings during its lateral movement, a spring interposed between the arm and pole, and a trolley wheel j ournaled on said arm.

5. ln a structure of the character set forth, the combination with a trolleyY pole having a. rearwardly turned upper end provided with a yoke, a pin located lin the yoke, an arm pivotally mounted on the pin and having a limited lateral sliding movement thereon, a trolley wheel carried by the outer end of the arm, the inner end of said arm having an opening, a stem carried by the 'pole and passing through the opening, the inner end of said arm sliding on the stem when the arm swings on the pin of the yoke and swinging with said pin as an axis during the lateral movement of the arm, Vand a compression spring located on the stem and interposed between the arm and pole.

ln testimony, that I claim the foregoing as my own, I have hereto aflixed my signature inthe presence of two witnesses.

SAMUEL B. SCKELSMITH. 

